Calculate the flow rate of water required

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Reference no: EM13718098

1 - A shell-and-tube heat i exchanger operates with two shell passes and four tube passes. The shell fluid is ethylene glycol, which enters at 140°C and leaves at 80°C with a flow rate of 4500 kg/h. Water flows in the tubes, entering at 35°C and leaving at 85°C.

The overall heat-transfer coefficient for this arrangement is 850 W/m².°C.

Calculate the flow rate of water required and the area of the heat exchanger.

2- The flow rate of glycol to the exchanger in Problem 1 is reduced in half with the entrance temperatures of both fluids remaining the same. What is the water exit temperature under these new conditions, and by how much is the heat-transfer rate reduced?

Reference no: EM13718098

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